Table 1.

List of items in the patients’ questionnaire

Categorized items	Answers	Original text if renamed
Number of missed doses		Frequency of forgetting medication
During the last month	Less than 1 dose a month, 2–3 doses a month, 1–2 doses a week, nearly daily	Less than once a month, 2–3 times a month, 1–2 times a week, nearly daily
During the last week	No dose, 1 dose, 2 or more doses	Never, once, twice, more than two times
During the last weekend	No dose, 1 dose, 2 doses	Never, once, twice
Reasons for nonadherent behavior
Skipping medication when feeling bad
Interactive toxicity beliefs regarding alcohol or party drugs/going out	Yes/no	I want to go out. I think my medication is not compatible with alcohol/party drugs
Reminder of the disease		Taking ART reminds me of my disease
No need of undergoing ART anymore		It does not make sense anymore
Harmfulness of ART		The medication is harmful to me
Nonexistence of HIV; just exists for the pharmaceutical industry to earn money		HIV does not exist; the pharmaceutical industry just wants to earn money
Afraid of being seen		I am afraid that others will see me taking my medication
Too high a dose		I think the dose is too high
Financial constraints		Co-payment is sometimes too expensive/other financial reasons
Other reasons	Free text field
Satisfaction with ART regarding
Interference with daily routine	Satisfied, not satisfied	Ordinal scale: 1–7; 1–2: satisfied, 3–7: not satisfied
Efficacy
Simplicity		Simplicity and acceptability
Side effects
Other questions
Importance of regular ART intake	None/little, high, very high	None, little, high, very high
Problems with adherence	Yes/no, free text field

Note: List of categorized items from the patients’ questionnaire, containing also the possible answers and the original text if the items or answers were renamed.

Abbreviations: ART, antiretroviral therapy; HIV, human immunodeficiency virus.